Switch-throw.



No. 738,205. PATENTED SEPT. 8, 1903. G. G. KORNS.

SWITCH THROW.

APPLICATION rum) OCT. 15, 1902.

N0 MODEL.

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No. 738,205. Patented September 8, 1903.

UNITED STATES PATENT OEEIcE.

CLARENCE C. KORNS, OF JOHNSTOWN, PENNSYLVANIA, ASSIGNOR TO THE LORAINSTEEL COMPANY, A CORPORATION OF PENNSYLVANIA.

SWITCH-TH ROW.

SPECIFICATION forming part of Letters Patent No. 738,205, datedSeptember 8, 1903.

Application filed October 15, 1902. Serial No. 127,429- (No model.)

T all whom it y concern: The cover portion of the box A has a lon- Be itknown that I, CLARENCE C. KORNS, gitudinally-extending slot atherethrough to of Johnstown, in the county of Cambria and permit of theoperation of the lever C, the State of Pennsylvania, have invented a newend portions a of such slot being laterally 55 and useful lmprovementinSwitch-Throws, enlarged to admit the hand for the purpose of which thefollowing is a full, clear, and of grasping the handle portion of saidlever. exact description, reference being had to the This lever isnormally in the oblique position accompanying drawings, which form apart shown in Fig. 2, with its handle portion lying of thisspecification. just within the box A, where it can be readily 6o 10 Myinvention has relation to certain new reached by the hand. With thelever in this and useful improvements in switch-throws, position it willbe readily seen that if the and more particularly to a switch-throwdeswitch-rod were directly connected thereto signed for use in streetsand other places the switch would not be locked, but might be where itis necessary or desirable that the accidentally thrown, or that a car orengine 65 switch-lever shall normally lie below the surby trailingthrough the switch might throw face of the street or pavement. the leverupwardly out of the box and possi- The object of my invention is toprovide bly injure some person in the street. This, switch-operatingmeans of simple and prachowever, is effectually prevented by means oftical character in which the operating-lever the short lever D, which,it will be noted, by 7o normally concealed in a suitable box or reasonof the eccentric relation of the centers casing set in the street orpavement in such a and d has been forced past the center 0 to positionas to be readily accessible through a position in which it is securelylocked the slotted cover of such box or casing, while against accidentalmovement. at the same time the switch is automatically The manner inwhich the lever D is turned 2 5 locked thereby against accidentalmovement. on the center d to actuate the switch-rod E ith this object inview my invention conwhen the lever C is thrown is apparent from sistsin the novel construction, arrangement, the drawings. The simplicity ofthe arrangeand combination of parts, all as hereinafter ment and itspositive action, combined with described, and pointed out in theappended the locking-feature above described, make 0 claims, referencebeing had to the accompanyit a very useful device for the purpose.

ing drawings, in which- \Vhile I have illustrated the invention inFigure 1 is a plan view showing my imconnection with a split switch, itwill of proved switch-throw with portions of the course be understoodthat it may be used to box or casing broken away 5 Fig. 2, a sideequaladvantage with other forms of switches. 3 5 view of the same; Fig.3, a plan view of the Various changes may also be made in thedeoperative parts on a larger scale, and Fig. at tails of constructionand arrangement witha detail view. out aifecting the material featuresof my in- The letter A designates a suitable box or vention. casing,which in use is designed to be set in Having thus described myinvention, what 40 the street or pavement adjacent to the switch I claimas new, and desire to secure by Letters 13, substantially flush with thesurface thereof. Patent, is C is the operating-lever, which ispivoted 1. In a switch-throw, the combination with near one of its endsat the central portion of an operating-lever, and a switch-rod to beopthe box on a large center 0. D is a short erated thereby, of anintermediate lever to 45 lever, which is pivoted on a center (I, whichwhich the said rod is connected, and which is is eccentric with respectto the center a, the connected to the operating-lever, said interaXis ofat being below the aXis of 0. One end mediate lever having its centerparallel with portion of this lever D is engaged by a pin but below thecenter of the operating-lever, or projection c on the short arm of thelever the point of connection between the switch- 50 C, and to itsopposite end portion is pivotally rod and the intermediate lever, andthe point connected the switch-rod E. of connection between theintermediate lever and the operating-lever, being respectively atopposite sides of the axes of said levers.

2. In a switch-throw, the combination with an operating-lever, and aswitch-rod to be 0perated thereby, of a short intermediate lever,parallel with the operating-lever and fulcrnmed eccentrically thereof,one arm of said intermediate lever being connected with the short arm ofthe operating-lever and its other arm with the switch-rod.

3. The combination with the operatingdever, of the short lever pivotedintermediate of its ends eccentrically of the operating-lever, andhaving one of its arms operatively connected to said operating-lever,and a switch-rod connected to the other arm of said short lever.

CLARENCE C. KORNS.

lVitnesses:

GEO. H. PARMELEE, H. XV. SMITH.

